专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4800001A Method and apparatus for continuously galvanizing flat workpieces, and especially printed circuit boards 失效
标题翻译：连续镀锌扁平工件，特别是印刷电路板的方法和装置
公开(公告)号：US4800001A
公开(公告)日：1989-01-24
申请号：US8738
申请日：1987-01-30
申请人： Rudi Ott , Heribert Reith
发明人： Rudi Ott , Heribert Reith
IPC分类号： C25D5/06 , H05K3/24 , C25D7/00 , C25D17/12 , C25D17/28
CPC分类号： H05K3/241 , C25D5/06
摘要： Printed circuit boards can be continuously electroplated by passing them through a pair of rollers (7) forming cathodic rollers, which are spring-pressed towards each other, the rollers being driven, for example at the circumferential speed of about 1/2 meter per minute. The rollers form a transport arrangement for the printed circuit board, while providing electrical connection to conductive tracks thereon. Closely downstream of the cathodic rollers are a pair of anodic rollers, made, for example, of titanium with a covering of platinum or iridium, over which a felt sleeve is placed, on which felt sleeve an electrolyte, including sulfuric acid and copper is sprayed. The anodic rollers, connected to a positive terminal, are spaced from the surface of the printed circuit board to leave a surface gap between the rollers and the printed circuit board of about 0.1 mm. Copper is electrolytically deposited, for example, at the current density of about 15 A/dm.sup.2, which is about six times of the density of immersion bath galvanizing, thus permitting deposition of about 32 micrometers copper in 10 minutes rather than 60 minutes in an immersion bath. A plurality of cathodic roller pairs (7) and anodic roller pairs (8) are combined in a single housing to form a module, for example of 10 pairs each, requiring for ten modules 7 meters of length of plane floor space for continuous processing.
摘要翻译：印刷电路板可以通过使它们通过形成阴极辊的一对辊（7）而连续电镀，所述辊形成阴极辊，所述辊彼此弹簧压紧，所述辊被驱动，例如以约1/2米/分钟的圆周速度。辊形成用于印刷电路板的输送装置，同时提供与其上的导电轨道的电连接。阴极辊的紧密下游是一对阳极辊，例如由钛制成，具有铂或铱的覆盖物，在其上放置毡套，毛毡套上包括硫酸和铜的电解质被喷涂在其上。连接到正极端子的阳极辊与印刷电路板的表面间隔开，使辊和印刷电路板之间的表面间隙约为0.1mm。铜以例如约15A / dm 2的电流密度进行电解沉积，约为浸浴镀锌密度的六倍，从而允许在10分钟内沉积约32微米的铜而不是60分钟沉积浴。多个阴极辊对（7）和阳极辊对（8）组合在单个壳体中以形成例如每对10对的模块，其需要十个模块，用于连续处理的7米长的平面占地空间。

IPRDB

热门服务

关于我们

友情链接

联系方式